The Hanhart Primus Racer pays tribute to Hanhart's long history as the most important manufacturer of manual stopwatches.

In the past, Hanhart stopwatches have always played a key part in leading motor sports events. Timers held their leather clipboard in their left hand, and with their right hand they operated the three Hanhart stopwatches mounted on the brackets.

Classic rally drivers rely on Hanhart watches to this day.

To create this chronograph bicompax movement, Hanhart started with a Valjoux 7750 and then designed modifications to create the bicompax display.

These modifications have been carried out under the direction of Manufacture La Joux-Perret, and include adjusting the registers to correctly and proportionally fit the size of the dial (rather than the "pinched look" seen in other chronograph watches of this size).